[4] Terik studied social work at the Tallinn Pedagogical College.

He earned a master's degree in government and administration from Tallinn University in 2015.

In 2018 he took the Battalion Staff Officer course at the Estonian Military Academy.

He earned a Defence League Medal of Merits, III class.

He was then elected multiple times to the Tallinn City Council (2009; 2013; 2017).